Here is an article based on a problem:
Metamask: An intelligent agreement in the VS code not connected to the Ethereum
test network **
Do you use metamas and stability to create smart contracts for your Ethereum projects? In this case, you are likely to be familiar with the establishment of a local Ethereum network in the VS code. However, when you try to test your contract at Metamask Ethereum Test Network (ETN), you can face questions like Chainid to address incompatibility.
In this article, we are analyzing why Metamask is not in contact with ETN and we provide solutions to solve the problem.
Why doesn’t my metamask connection work?
The most common reasons for the Metamask connection error in the ETN are:
- Invalid chain id : The contract chain should fit into the Medamamk Account Settings settings.
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Correction and solutions
Let’s go through each of these possible problems and offer solutions:
1. Invalid chain id
Your contract chain address must adapt a metamask account configuration.
* Metamask Account Settings : Open Metamask, go to the “Account” tab and click “Network”. Find the Ethereum network you use and select -a.
* Contract Code : Verify that the chainid field corresponds to the value of the metamask account settings. For example:
`Solidity
Pragman’s solidity ^0.8.0;
agree with MymartContract {
// …
}
`
In this case, as we use firmness 0.8.0, the standard chain ID is 1.
2. Insufficient gas
If the contract syllable code is not compatible with the available gas compensation, errors may occur when the contract is sent.
* Check gas supply
: Make sure your contract has enough gas to complete the byte code.
* Check that the contract code : Double stipulated that the contract syllable code is correct and is responsible for the solid translator.
* Add gas : If the gas runs out, try adding it using the word “gas” or the gas counter, such as the EtherScan.
3. ETN network determination problems
The configuration may not have been defined correctly for your contract.
* Check the ETN Web Settings : Make sure the Metamask Etn Network settings correspond to your local Ethereum network.
* Test in the local ETN : Before moving to ETN, test your contract locally with the “testnet” option.
Example of use
Here is an example of a simple firm agreement with an incompatibility of the chain address:
`Solidity
Pragman’s solidity ^0.8.0;
agree with MymartContract {
Myevent event (Uint256 _chainid);
Mapping (Unt256 => Uint256) Public Myvalues;
Mapping (Address => Uint256) PUBLIC MYVALUESFROMESTESTNET;
Setchainid Function (Uint256 Childid) PUBLIC {
Requires (Chainid! = 1, “Invalid Chain ID”);
Emitted Myevent (Chainid);
}
FUNCTION GETMYVALU (Uint256 _Chainid) Public Viewing Returns (Uint256) {
if (_chainid == 1) {//
Returns ();
}
Restore myvalues [_chainid];
}
}
`
In this example, the `setchainid ‘function of the contract accepts the chain address that is not 1.
Conclusion
Make sure the Medamask account settings are responsible for the solution for Medamask connectivity in ETN. Check the gas and check the contract code to avoid errors. Also, check the ETN network configuration settings and test locally before Implementation in ETN.
